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LAUSANNE, Switzerland - The United States said on Tuesday that world powers and Iran would keep negotiating over an outline accord on Tehran's nuclear program beyond a midnight deadline, while warning that it was ready to abandon the talks altogether. | Video

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BERLIN - The German pilot who crashed a plane in the French Alps last week, killing 150 people, told officials at a Lufthansa training school in 2009 that he had gone through a period of severe depression, the airline said on Tuesday. | Video

ABUJA - Three decades after seizing power in a military coup, Muhammadu Buhari became the first Nigerian to oust a president through the ballot box, putting him in charge of Africa's biggest economy and one of its most turbulent democracies. | Video

- U.S. cable T.V. operator Cablevision Systems Corp is planning to make an offer for the New York Daily News as early as this week, valuing the troubled tabloid at just $1, according to a person familiar with the matter. | Video

NEW YORK - Oil fell for a third straight session on Tuesday, with Brent crude tumbling 12 percent for the month, as world powers entered into intense negotiations with Iran for a nuclear deal that could bring more of its oil to an oversupplied market.